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Table 1 Missing scores, floor and ceiling effect and internal consistency (Cronbach’s α), of the Bengali version KIDSCREEN-27

From: Cross-cultural validation of the Bengali version KIDSCREEN-27 quality of life questionnaire

Instrument dimension Adolescent with CP Controls
Items n Missing scores n(%) Floor effect n(%) Ceiling effect n(%) Cronbach’s α n Missing scores n(%) Floor effect n(%) Ceiling effect n(%) Cronbach’s α
SELF-REPORT
 Total score 27 64 31 (48.4) 0 (0.0) 0 (0.0) 0.88 a 173 21 (12.1) 0 (0.0) 0 (0.0) 0.88 c
 Physical wellbeing 5 64 0 (0.0) 0 (0.0) 1 (1.6) 0.74 173 0 (0.0) 0 (0.0) 0 (0.0) 0.75
 Psychological wellbeing 7 64 0 (0.0) 0 (0.0) 0 (0.0) 0.75 173 0 (0.0) 0 (0.0) 0 (0.0) 0.76
 Autonomy and parents 7 64 0 (0.0) 0 (0.0) 1 (1.6) 0.73 173 0 (0.0) 0 (0.0) 6 (3.5) 0.76
 Peers and social support 4 64 0 (0.0) 1 (1.6) 1 (1.6) 0.71 173 0 (0.0) 2 (1.2) 4 (2.3) 0.67
 School environment 4 64 31 (48.4) 0 (0.0) 3 (4.7) 0.86 a 173 21 (12.1) 0 (0.0) 18 (10.4) 0.69 c
PROXY-REPORT
 Total score 27 154 115 (74.7) 0 (0.0) 0 (0.0) 0.89 b 173 19 (11.0) 0 (0.0) 0 (0.0) 0.91 d
 Physical wellbeing 5 154 0 (0.0) 0 (0.0) 0 (0.0) 0.81 173 0 (0.0) 0 (0.0) 5 (2.9) 0.91
 Psychological wellbeing 7 154 0 (0.0) 1 (0.7) 0 (0.0) 0.81 173 0 (0.0) 0 (0.0) 0 (0.0) 0.79
 Autonomy and parents 7 154 0 (0.0) 2 (1.3) 0 (0.0) 0.73 173 0 (0.0) 0 (0.0) 3 (1.7) 0.78
 Peers and social support 4 154 0 (0.0) 36 (23.4) 0 (0.0) 0.83 173 0 (0.0) 2 (1.2) 4 (2.3) 0.81
 School environment 4 154 115 (74.7) 0 (0.0) 1 (0.7) 0.82 b 173 19 (11.0) 0 (0.0) 13 (7.5) 0.76 d
  1. a n = 33, b n = 39; c n = 152; d n = 154